Speaker Tester — Left, Right & Frequency
Test stereo channels, speaker balance, tones, and a controlled frequency sweep with the Web Audio API.
Start at a low volume to protect your hearing and speakers.
Audio is enabled. Keep the volume low before starting.
Frequency
Volume
Start at a low volume to protect your hearing and speakers.
How to use this test
Enable audio, lower your system volume, then test left, right, and both channels. Use tones briefly; audible range varies by person and equipment.
Troubleshooting
- If you hear both channels during a left/right test, check mono-audio accessibility settings, Bluetooth profiles, cable adapters, and speaker wiring.
- If no sound plays, confirm the correct output device and unmute both the browser tab and operating system.
- Start at low volume. High-frequency tones may be inaudible even when the speaker is working normally.